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INSTRUCTION P/N 198461
Connect terminals 13 – 18 to the normally open pump start and stop float switches based on the pumping
operation (i.e. pump down).
Connect terminals 19 and 20 to the normally open LOW level float switch.
OPERATING INSTRUCTIONS
Hand-Off-Automatic selector switches may be provided for the pumps allowing them to be operated automatically
or manually. To energize the pumps, turn the respective switch to the “Hand” position. To de-energize the
pumps, turn the respective switch to the “Off” position. These switches will normally be in the “AUTO” position
and operation will then be as follows.
The panel is equipped with an automatic pump alternator. The pumps will alternate when the lead pump stops
beginning with pump #1. When the level rises to lead pump electrode or float pump #1 will energize. When the
level recedes to the pump stop(s) electrode or float the alternator will sequence to pump #2. On the next lead
pump start pump #2 will energize. Should both pumps be required then both pumps will energize and the cycle
will reset to pump #1.
Pump Down
The lead pump will be started when the tank level rises to the lead pump START electrode or float and will
continue in operation until the level is reduced below pump(s) STOP electrode or float.
Should the pump be unable to meet the demand or fail completely and the level rises to the lag pump START
electrode or float, the lag pump will be started and will continue in operation until the level is reduced below
pump(s) STOP electrode or float.
Pump Up
The lead pump will be started when the tank level recedes below the lead pump START electrode or float and will
continue in operation until the level rises to the pump(s) STOP electrode or float.
Should the pump be unable to meet the demand or fail completely and the level recedes below the lag pump
START electrode or float, the lag pump will be started and will continue in operation until the level rises to the
pump(s) STOP electrode or float.
High Alarm
If the tank level rises to the HIGH LEVEL electrode or float, the high level alarm light will illuminate.
If the audible alarm option was chosen the following will also occur:
The audible alarm horn will sound and the contacts connected to terminal pair 7 – 8 will close. The contact will
remain closed until the high level condition is corrected. The audible alarm can be silenced by momentarily
depressing the SILENCE pushbutton, however, the light will remain on until the abnormal condition is corrected.
Low Alarm
If the tank level rises to the LOW LEVEL electrode or float, the low level alarm light will illuminate.
If the audible alarm option was chosen the following will also occur:
The audible alarm horn will sound and the contacts connected to terminal pair 9 – 10 will close. The contact will
remain closed until the high level condition is corrected. The audible alarm can be silenced by momentarily
depressing the SILENCE pushbutton, however, the light will remain on until the abnormal condition is corrected.
